Metal coiling apparatus



Dec. 17, 1929'.

D. L. SUMMEY METAL COILING APPARATUS Filed May 24, 1928 2 Sheets-Sheet 1 mam $51 Qbtoweqs I Dec. 17, 1929. D. L. SUMMEY METAL GOILING APPARATUS Filed May 24, 1928 2 Sheets-Sheet 7 2 3&3 1

avwemto'c mm dlww Patented Dec. 17, 1929 UNITED STATES DAVID I4 SU'MMEY, OF. WATERBURY, CONNECTIGUTT METAL COILING APPARATUS Application filed May 24',

This invention relates to metal coiling; apparatus.

It is an obj ect' of the invention to; provide apparatus for efiectively and economically coiling. and. cooling extrudedstock without oxidation. of the. metal.

With this general object in view, thezinvention consists: in the features, combinations, details of construction and arrangements of parts whichwill first be described in connection with the accompanying drawings and then more, particularly pointed out.

In the drawings:

Figure: 1' is, a view in side elevation, with parts in! section, and, largely diagrammatic, of apparatus constructed in accordance with the invention;

Figure. 2 is a, sectional view (enlarged) taken on the line-2.-2 of Fig. 1 and Figure 3 is. a detail view showing partof the. apparatus in end; elevation.

Referring to the drawings, 11' indicates the delivery end of an extrusion press. This may beof. any suitable construction, for example, that shown in a co-pending.applicationSerial No. 94,334. This press is arrangedto extrude two rodsor wires 12- side. by side.

There. is provided means for coiling. the extruded stock and cooling thesame in anonoxidizing atmosphere.v This may lie-accomplished by coilingthe: rods in a.closedi chamber, transferring the coils to a cooling tank, and setting up a non-oxidizing. medium adj acent the path, of travel of the stockfrom the press to theltank.

While the coiling meansmay vary inconstruction, in that heretshown as. an example, below the end'oftheextrusion press. arev two cylindrical housings 1'3v forming. coiling chambers 14. In. eachichamber. is. anannular rod-receiving platformlfi surrounding a-central post 16. The twochambersareclosed at the top by a common cover 17 andat the bottom by a water bath locatediin apit 181,

Located centrally above each. post 16 is a rotary whipping or: coiling.block.19 having anobli ueborethrough which the rod passes. As the hlock is rotated, whichmay beaccomlished in any suitablemanner', therod is 59 aid in a vcoil on platform 15' assindicated in 1928.- Serial No. 280,149.

the drawing and as described in the co-pend ing'application referred to.

While the" rods maybe' fedto the'whipping' blocks in any suitable manner, this may be conveniently accomplished by feeding rolls such as described in the application; referred to. As here shown, extending. fromwthe clelivering end of the extrusion press to the whipping blocks,which are located'atthe top of chambers 14', are conduits or housings'21 having a common recei'vingfl portion. 22; These housings are curved" outwardly and downwardly to constitute proper paths for the extruded rods in their passage from the press to thecoiling chambers; Fig;- 2 indicates feeding rollers'23 in housings 21, these rollers being omitted from Fig; I for*sim-, plicity of illustration.

There is provided; means" for setting up' a non-oxidizing medium along the path of the extruded. rods. This may be accomplished, for example, by steam, carbon dioxide. or other suitable gas. In the'present exemplification, at" the receiving end of housings 21 is a pipe 24 for delivering a. water spray or stream. This stream entering housings 21 and passing, in part, down along the feeding rollers, falls on the hot extruded stock and forms steam. Located in thecover 1.7 of the coiling chambers are a plurality of pipes 25 for delivering sprays into chambers 14. These sprays also form steam by falling on the hotmetal.

Pit 18 has-an overflow pipe'2 6lto maintain the water bath level.

Adjacent the coilingch'ambers is. a cooling tank 31 containing a cooling bath, forex ample, water. An inlet pipe 32 and over flow pipe 33 enable a constant bath level to be maintained. Opening out of the upper ends of coiling, chambers 14-. is a common transfer spout 84' the lower open end of which. is sealed by being located below the water level in tank 31. After the coiling ofapair ofrods-has been completed, platforms 15 are raised to bring the coils.- in line with the mouth of spout 34. While this'may beaccomplished in any suitablemanner, as here shownas an example, the p1atfor1ns are connected by links 36 with a crosshead 37. Com

nected to this cross head are the piston rods 38 of two fluid pressure units 39. As is more fully described in the application referred to, the lower ends of cylinders 39 may be connected through control valves (not shown) with a fluid pressure system. The upper ends may be direct connected in' the pressure line and thus under what may be termed constant return pressure. To raise the crosshead, these valves are opened and the pistons are advanced, the return pressure being ineflective because of the differential in piston area.

This raising of the crosshead elevates the platforms to a position to be pushed into spout 34. I

To transfer the coils from the platforms, as here shown as an example, opposite the mouth of spout 34 are two 'arcuate pushers 41 mounted on the ends of piston rods 42 of fluid pressure units 43. By means of power applied in cylinder 43 pushers 41 are advanced to push the two coils from platforms 15 into spout 34. The transferred coils slide down the spout into thewaterbath of tank 31 to be cooled thereby.

There'is provided means for delivering the coils from the coolingtank. Although capable of various constructions, as hereshown as an example, traveling through the cooling tank is an endless belt .46 having a plurality of spaced-cleats 47. The belt is driven by a pulley 48 located outside the tank and passes over a guide pulley 49located near the bottom of the tank, This gives the belt an upward slanting path out of the tank with its lowerend located under spout 34., As the coils slide down the spout into the cooling bath they drop onto belt 46 and, being engaged by cleats 47, are carried upward through the bath and out of the tank. At the upper end of the belt the coils .may be removed in any suitable manner. If desired, carbon dioxide or other suitable-gas can be delivered above the surface of the water in tank 31 as a nonoxidizing medium.

By the time the coils reach this point of removal the metal has been cooled. As the travel of emergence from the pass to the point j and the pistons move down under constant return pressure, thus lowering the crosshead. The pushers 41 are similarly reversed.

There is provided means for fixing the initial or normal position of the platform. To this end, located below crosshead 37, but disconnectedtherefrom, are two piston rods 52, of relatively short fluid pressure units 53. The lower ends of these cylinders are valve controlled and the upper ends are under constant return pressure; When the crosshead is raised, as above described,'it moves away from these piston rods. Upon reverse movement of the crosshead, under return pressure in units 39, piston rods 52 serve as stops to position the platforms in coil-receiving position. That is, units 53 being kept under variable pressure, when the descending crosshead strikes the ends of piston rods 52, the variable pressure of units 53 is effective over the return pressure of units 39 and the crosshead is stopped by the'ends of piston rods 52.

If it is desired to cool the platforms, after delivery of a pair of coils by pushers 41, units 53 as well as units 39, are put under return pressure. Consequently, piston rods 52 are Withdrawn from stopposition and the istons of units 39 can, therefore, make their full stroke. This causes platforms 15 to be lowered into the water bath in pit 18v and so cooled.

To return the parts to initial position, under these conditions, units 53 are put under variable pressure and so advanced. The ends of piston rods 52 engaging crosshead 37 push the same upwardly thus raising the platforms. Meanwhile units 39 are under return pressure andtheir pistons are merely drawn upwardly by the dominant pressure of units 53. The full stroke of piston rods 52 determines, initial position of the crosshead and platforms and by maintaining variable pressure on units 53 the crosshead is held in this position until variable pressure is again ap plied to units 39 to raise the-platforms to discharge the next pair of coils".

Pressure fluidmay be applied to the SQV-r oral units and the units controlled in any suitable manner, for example, as described in the copending application referred to, in which certain features of the apparatushere described arecl'aimed.

What I claim is: v

1. In combination with an extrusion press, a substantially closed chamber, means for causing extruded stock to be coiled in said chamber as it comes from the press, and means for setting up a non-oxidizing medium in said chamber; i p

I 2. In combination with an extrusion press, a substantially closed chamber, means for causing extruded stock to be coiled in said chamber as it comes from the press, means for setting up a non oxidizing medium in said chamber, a cooling tank, a substantially closed'passage between said chamber and said tank, and means for transferring the coiled stock from the chamber to the tank.

3. In combination with an extrusion press, a substantially closedchamber, means for directing the extruded stock from the press to said chamber and causing it to be coiled therein, and means for setting up a nonoxidizing medium along the. path of the stock to said chamber and in said chamber. I v

4. In combination with an extrusion press, a substantially closed chamber, means for directing the extruded stock from the press to said chamber and causing it to'be coiled therein, and means for applying a water spray to the hot metal in its path to the chamber and in the chamber, whereby the stock is delivered and coiled in a steam bath.

5. In combination with an extrusion press, a substantially closed chamber, means for directing the extruded stock from the press to said chamber and causing it to be coiled therein, a cooling tank, means for maintaining a substantially constant water level in said tank, a spout leading from the coiling chamber to the tank and having its discharge end below the water level in the tank, and means for transferring the coiled stock from the chamber to the tank.

In testimony whereof, have hereunto set my hand.

DAVID L. SUMMEY. 

